brittlestar vs Northern Dusky Slug

Amphiura filiformis compared with Arion fuscus

Key Differences

• brittlestar is Least Concern while Northern Dusky Slug is Data Deficient.

Taxonomic Classification

Rank	brittlestar	Northern Dusky Slug
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Echinodermata (Echinoderms)	Mollusca (Mollusks)
Class	Ophiuroidea (Ophiuroidea)	Gastropoda (Gastropoda)
Order	Amphilepidida (Amphilepidida)	Stylommatophora (Stylommatophora)
Family	Amphiuridae	Arionidae
Genus	Amphiura	Arion
Species	Amphiura filiformis	Arion fuscus

Evolutionary Relationship

brittlestar and Northern Dusky Slug share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

brittlestar

LC — Least Concern

Northern Dusky Slug

DD — Data Deficient

Physical Characteristics

Attribute	brittlestar	Northern Dusky Slug
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brittlestar

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Northern Dusky Slug

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Europe (7 countries).

brittlestar

The Brittlestar (Amphiura filiformis) is a species in the genus Amphiura. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden